Pulley



J. H. DILLON Feb. 9,1932.

PULLEY Original Filed Jan. 5, 1922 mmto/z 4%9/1 J JOSEPH H. DILLON, OF WILMETTE, ILLINOIS, ASSIGNOB TO DILLON PULLEY (70., OF CHICAGO, ILLINUIS A CORPORATION OF ILLINOIS rULLEY Application filed January 5, 1922, Serial No. 527,190. Renewed January 30, 1929."

lily invention relates to builders hardware, and more specifically to an improved pulley and support therefor, constituting an article of manufacture commonly referred to as an entirety as a sash pulley.

()ne primary object of the invention is to improve the -functioning of devices of this sort.

A more specific object is to provide guiding baffles and apertures of a better'and more etlicient shape than have heretofore been constructed.

Another primary object is to diminish the cost of the finished article without decreasing either its strength or durability. p

A more specific objectis to provide for the use of lighter metal by embossing the sides of the casing to strengthen it.

Another object is to diminish the number of parts, more particularly by forming the entire casing of a single piece.

Another object is to simplify the shape of the parts and simultaneously provide a more positive fastening engagement between the parts.

Further objects and advantages of the invention will become apparent as the description proceeds.

In the accompanying drawings,

Figure 1 is a plan view of a. blank from which the casing is to be formed;

Fig. 2 is a sectional view of the finished article; and

Fig. 3 is a section on line 33 of Fig. 2.

The disclosure herein is in the nature of an improvement on Patent 1,22%,152 to Joseph J. Dillon, May 1, 1917, and on my co-pending application, Serial No. 537,398 filed February 18, 1922.

In the embodiment of my invention selected for illustration the entire support for the pintle 10, and casing for the pulley 12 comprises only two pieces of metal; a blank 14 and a face plate 16. The blank 14 is deformed by suitable dies into the shape indicated in Fig. 2, the portion indicated in Figure 1 by dotted line 18 forming the base of the casing, and the material surrounding the same forming the side and peripheral walls thereof. A circular aperture 20 and an elongated aperture22 are formed in the base portion 18 and a tab 24 is struck up therefrom, for a purpose to be described hereinafter. A slot .26 is also provided to-rec'eive'lug 28 of base plate 16 when the device is being assembled;

Bosses 80, and a raised or embossed area 32 in each side wall are formed by the dies as the blank is pressed into shape. The portions 3% beyond the outer extremities of apertures 20 and 22 are deformed into vertical planes as clearly indicated in Fig. 2.

The outermargins of the blank are curved together as at 36 above portions 3% and over the top of the casinginto abutment at 38 to form a complete enclosure except for the apertures in the base 18. One or-both of the side walls of the casing have a projecting portion 40 extending from the transverse central plane of the casing forwardly through a suitable aperture in base plate 16, and terminating in lugs 42 adapted to be turned over or otherwisedeformed to lock the casing in place in the base plate. Where bot-h tabs or lugs 42 are carried by one side wall and bent in opposite direction to clinch plate" 16 in place, the twisting tendencies of the lugs when force is exerted to pull'plate 16 away from the casing, are exerted in opposite senses on portion l0 and therefore neutralize each other.

Plate 16 is preferably a driving fit on the casing, and the parts are assembled by inserting lug 28 in slot 26 and then forcing the easing into the position shown in Figure 2 by rotation around the lug. Lugs 42 are bent over and, if desired, spot welded to plate 16, and the assembly is complete.

The edges of apertures 20 and 22 are carefully rounded or beaded'as clearly shown in Fig. 2 to guide the cord with a minimum of friction and wear. a No mouse is required to insert the cord, which should be entered through aperture 20, passing up and over the pulley and out-at aperture 22. In passing around the pulley, thecord acquires a certain degree of curvature, and if the base 18 were flat near aperture 22, the cord might follow the pulley past the aperture. Lug 24 is bent up to form a baffle completely Fries preventing any such contingency, and aperture 22 is elongated toward the transverse central plane of the casing. On account of this elongation the cord will in many instances pass out through aperture 22 without any assistance, but if itshould tend to follow the pulley, baffle 24 will effectually deflect it through the aperture.

The pulley I employ comprises duplicate stampings '44 assembled on a sleeve 46 supported by pintle 10, and "apertured for the reception of annular sheet metal riveting devices 48.

\Vithoutfurther elaboration, the foregoing will so fully explain the gist of my invention,

that others may, by applying current knowledge readily adapt the same for use'under various conditions of service, without eliminating certain'features which may properly be said to constitute the essential items of novelty involved, which items are intended to be defined and secured to me by the following claims.

I claim:

-l.;In a device of the class described, a sheet metal casing formed of a single piece of material, and a facegplate 'apertured'tobe a driving fiton the outside of said casing.

2. Ina device of the class described, a sheet metal casing-formed ofa'single'piece of material, comprising a base porton, and side v'wallscurved inwardly along their edges into abutment" to form the end and topwalls of edges .together and reinforce the casing,said

base portion being apertured for passage of a cordtwice through .the same.

4. In a device of the class described, a one piece closed casing, a pulley within said casing, apertures in said casing for receiving a cord, said apertures completely encircling said cord onlyat points. beyond Where the cord leavesthe pulley, one of said apertures beingelongated.

5. In a device of the class'described, a one piece closed casing, apulley within said casing, apertures in said casing for receiving a cord, said apertures encircling said cord only at'poin'ts beyond where --the:cord leaves the pulley, one of-said apertures being elongated, and a baflieadj acent said elongated aperture for directing the end of a cord thrust round the pulley throughsaid aperture.

6. Ina-device ofthe class described, a one piece closed casing, apulley-withinsaid casing,tapertures in saidcasing for receiving a cordjsaidapertures encircling said cord only at points beyond where the cord leaves the pulley, one of said apertures being elongated, and a baflie struck up from said casing adjacent the edge of said elongated aperture to prevent the end of a cord from following thepulley groove past said aperture.

7. In a device of the class described, an apertured plate, a sheet metal casing having a closed side portion thereof entered laterally part way through said aperture and completely filling the same, and lug and slot means adjacent both ends of said aperture "for holding the parts in assembled relation.

-8. In-a device of the class'described, an apertured plate, a sheet metal casing havlng side walls entered through said aperture, and

lug means projecting from one side wall only for penetrating said plate adjacent one end of said aperture and holding the parts in place. 9. In'a device of the class described, a onepiece-sheetmetal casing having an integral edge, and the remaining edges closed by curving the sidewalls into abutment, a face plate for-passage of a cord twice through the same,

and a pulley in said casing, saidcasing closely housing said pulley throughout that portion of its periphery receiving the cord.

11. In a'device of the class described, a casing comprising a flat topped base and sides integral with said base, and a .pulley within said casing, said base being apertured for passage of a'cord twice through the same.

12. In a device of the class described, a casing comprising a flat topped base and sides integral with said base, and a pulley within said casing, said base being apertured for T passage of a cord twice through the same, said ITO 

